<!--
 * @由于个人水平有限, 难免有些错误, 还请指点:  
 * @Author: cpu_code
 * @Date: 2020-10-19 22:33:38
 * @LastEditTime: 2020-10-19 23:15:22
 * @FilePath: \web\javascript\element\element.html
 * @Gitee: [https://gitee.com/cpu_code](https://gitee.com/cpu_code)
 * @Github: [https://github.com/CPU-Code](https://github.com/CPU-Code)
 * @CSDN: [https://blog.csdn.net/qq_44226094](https://blog.csdn.net/qq_44226094)
 * @Gitbook: [https://923992029.gitbook.io/cpucode/](https://923992029.gitbook.io/cpucode/)
-->
<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>element对象</title>
    </head>

    <body>
        <a>点点</a>
        <input type="button" id="btn_set" value="设置属性">
        <input type="button" id="btn_remove" value="删除属性">

        <script>
            //获取btn
            var btn_set = document.getElementById("btn_set");
            btn_set.onclick = function(){
                //1.获取a标签
                var element_a = document.getElementsByTagName("a")[0];
                element_a.setAttribute("href","https://blog.csdn.net/qq_44226094");
            }

            //获取btn
            var btn_remove = document.getElementById("btn_remove");
            btn_remove.onclick = function(){
                //1.获取a标签
                var element_a = document.getElementsByTagName("a")[0];
                element_a.removeAttribute("href");
            }
        </script>
    </body>
</html>